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PSP Matrix ‘T’ Carrier System – Specification
H92 RAINSCREEN CLADDING
To be read with preliminaries/General conditions.
TYPES OF RAINSCREEN CLADDING
PSP Matrix ‘T’ Carrier System to provide support system for rainscreen cladding. System comprises adjustable brackets with vertical fixing rails. Additional horizontal members can be added should a horizontal fixing grid be required.
Approved, trained & certified design / installation contractors to install the system and components.
System selected to have formal test certification from a UK accredited testing facility, which complies with testing requirements laid out in the ‘CWCT Testing for Ventilated Rainscreen Façades’.
120 RAINSCREEN CLADDING Insert location or reference
- Drawing reference(s): N/A
- Primary support structure/substrate: Dense concrete blockwork / brickwork / concrete / structural steel framing / lightweight steel framing / timber frame by others.
- Rainscreen cladding system: Insert cladding system
- Secondary support/framing system: PSP Matrix ‘T’ Carrier System.
- Manufacturer: PSP Architectural Ltd, Unit 11, All Saints Industrial Estate, Shildon, County Durham DL4 2RD.
Telephone: 01388 770490.
E-mail:
Web: www.pspuk.com
- Product reference: PSP Matrix ‘T’ Carrier System.
- Material: 3mm thick pressed aluminium brackets with 2mm thick aluminium vertical ‘T’ & ‘L’ rails extruded to BS1474.
- Brackets: 90mm Single or 180mm Double, 80mm to 300mm projection as required.
- Rail profiles: 100mm x 40mm ‘T’ profile or 60mm x 40mm ‘L’ profile.
- Fasteners: Consult PSP for recommendations and details.
- Backing wall: As clause 130.
130 INTERNAL WALL By others
GENERAL REQUIREMENTS/PREPARATORY WORK
210 DESIGN
- Complete the detailed design of the rainscreen cladding and associated features shown on the preliminary design drawings to meet the requirements of this specification.
- Co-ordinate detailed design with that for all related works.
215 DESIGN PROPOSALS
- The preliminary design drawings indicate design intent but do not preclude submission with tender of reasonable alternative proposals for consideration.
220 SPECIFICATION
- Comply with the latest edition of the Centre for Window and Cladding Technology (CWCT) ‘Standard for walls with ventilated rainscreen’ and ‘Standard for testing of ventilated rainscreen” unless specified otherwise in this section.
- Keep a copy of the CWCT ‘Standard for walls with ventilated rainscreen’ and ‘Standard for testing of ventilated rainscreen’ together with other CWCT publications invoked by these documents, at the design office, workshop and on site, readily accessible for reference at all times during the course of the works.
230 INFORMATION TO BE PROVIDED DURING DETAILED DESIGN
- Submit the following cladding particulars:
- A schedule of detailed drawings and dates for submission for comment.
- A schedule of loads that will be transmitted from the rainscreen cladding to the structure.
- Proposed fixing details and systems relevant to the structural design and construction with methods of adjustment and tolerances.
- A schedule of all fabrication tolerances/size tolerances.
- A detailed testing programme in compliance with the main contract master programme
- A detailed fabrication and installation programme in compliance with the main contract master programme.
- A quality plan in compliance with the CWCT ‘Guide to good practice for facades’, section 6.
- Proposals to support any outstanding applications for Building Regulation consents or relaxations.
DESIGN/PERFORMANCE REQUIREMENTS
350 DEFLECTION UNDER WIND LOAD
- At positive and negative applications of the design wind pressure the maximum normal deflection for the listed components must not exceed:
- Framing members: L/200 of the span of the member measured between points of attachment to the building, or 20mm, whichever is the lesser.
PRODUCTS
710 ALUMINIUM ALLOY FRAMING SECTIONS
- To BS 1487, and suitable for the specified finish.
- Structural members to comply with BS 8118.
730 MECHANICAL FIXINGS
- Stainless steel to BS EN ISO 3506 grade A2 generally, grade A4 when used in severely corrosive environments.
- Mild steel to BS 4190 and suitable for galvanizing or other protective coating.
- Aluminium complying with BS 1474 and BS EN 755.
735 FIXINGS AND FASTENERS
- Type and use: Reviewed and approved by manufacturers.
- Dimensions: not less than recommended by their manufacturers.
- Adjustable capability: Sufficient in three dimensions to accommodate primary support structure and rainscreen cladding fabrication/installation tolerances.